Mobile Micro Base Station Channel Prediction Database
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Solution Overview
Problem
In multi-cell communication systems, mobile micro base stations pose challenges due to their changing positions, leading to unpredictable channels and increased overhead in real-time channel estimation and feedback, which affects data transmission and handover processes between macro and micro base stations.
Innovation Solution
A communication method that utilizes a channel prediction database to anticipate the traveling path and position of mobile micro base stations, allowing for efficient data transmission and reception based on predicted channel conditions, reducing the need for frequent feedback and optimizing modulation and coding schemes and resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If real-time channel estimation and feedback are used for mobile micro base stations, then channel accuracy is improved, but overhead and system complexity increase
Solution Approach 1:
The patent pre-collects channel state information at multiple possible positions of the mobile micro base station before actual movement occurs. This preliminary action stores channel characteristics in advance, eliminating the need for real-time estimation during movement, thus reducing overhead and system complexity while maintaining accurate channel knowledge.
Solution Approach 2:
The patent creates copies of channel state information for each possible position of the mobile micro base station. Instead of performing real-time measurements, the system uses pre-stored channel copies corresponding to different positions, which simplifies the system architecture and reduces feedback overhead while preserving channel accuracy.
2Reliability
If real-time feedback is requested from mobile micro base stations, then data transmission reliability is improved, but feedback overhead increases
Solution Approach 1:
The patent performs preliminary channel measurements and stores results before the mobile micro base station moves to new positions. This advance preparation ensures reliable channel knowledge is available without requiring continuous real-time feedback, thereby reducing feedback overhead while maintaining transmission reliability.
Solution Approach 2:
The mobile micro base station autonomously measures and reports channel information only when moving between predefined positions, rather than continuously feedbacking. This self-service approach reduces feedback overhead while ensuring reliability at critical transition points where channel conditions may change significantly.
3Quantity of substance
If channel prediction is performed without real-time feedback, then overhead is reduced, but prediction accuracy may deteriorate
Solution Approach 1:
The patent collects channel state information in advance at multiple possible positions of the mobile micro base station before movement occurs. This preliminary data collection enables accurate prediction without real-time feedback, as the pre-stored channel information captures the essential characteristics needed for reliable prediction at lower overhead.
4Measurement precision
If frequent channel estimation is performed for mobile micro base stations, then channel state accuracy is improved, but channel resources are consumed
Solution Approach 1:
The patent performs channel estimation periodically at predefined positions rather than continuously during movement. This periodic approach maintains channel state accuracy at critical points while significantly reducing channel resource consumption compared to continuous estimation, as the mobile micro base station only triggers measurements when reaching predetermined locations.
Data Source
AI summary
Communication methods of a macro base station which collects position information about a mobile micro base station and that is served by the macro base station, predicts a channel between the macro base station and the micro base station, and performs a handover between the macro base station and the micro base station based on a state of the predicted channel is provided.